One of the reasons health care costs have been rising rapidly in recent years is the increasing cost of malpractice insurance for physicians. Also, fear of being sued causes doctors to run more precautionary tests (possibly unnecessary) just to make sure they are not guilty of missing something. These precautionary tests also add to health care costs. Data in the Excel Online le provided below are consistent with ndings in the Reader's Digest article and can be used to estimate the proportion of physicians over the age of 55 who have been sued at least once. Construct a spreadsheet to answer the following questions. Open spreadsheet a. Formulate hypotheses that can be used to see if these data can support a finding that more than half of physicians over the age of 55 have been sued at least once. Ha = 19-9 0-50 Ha: 19-9 0'50 b. Use the Excel Online le provided above to compute the sample proportion of physicians over the age of 55 who have been sued at least once (to 2 decimals). :l Calculate the value of the test statistic (to 2 decimals). :l What is the p-value (to 4 decimal places)? Do not round intermediate calculations. :l c. At 0: : 0.01, what is your conclusion? Since p-value a: = 0.01 , we Ho. We conclude that we have evidence to suggest that the proportion of physicians over the age of 55 who have been sued at least once is greater than .50. D E A B C Have you been sued by a patient? 150 Yes Sample Size Yes No Yes No Yes Yes No 0.5 10 Yes Hypothesized Population Proportion 11 Yes 12 Yes 13 Yes 14 No 15 Yes 0.01 16 No Level of Significance (Alpha) 17 Yes 18 Yes 19 Yes 20 Yes 21 Yes 22 Yes 23 No 24 No 25 Yes 26 No 27 Yes 28 No 29 Yes 30 Yes 31 Yes 32 Yes 33 Yes 34 No 35 Yes 36 Yes 37 Yes 38 Yes 39 Yes 40 Yes 41 Yes 42 Yes 43 Yes 44 Yes 45 Yes 46 Yes 47 No 48 No 49 Yes 50 Yes 51 Yes 52 Yes 53 Yes 54 Yes 55 Yes 56 No 57 No 58 Yes 59 No 60 Yes 61 Yes 62 No 63 No 64 Yes 65 No 66 No 67 No 68 No 69 Yes 70 Yes 71 No 72 Yes66 No 67 No 68 No 69 Yes 70 Yes 71 No 72 Yes 73 No 74 No 75 No 76 No 77 No 78 Yes 79 Yes 80 No 81 Yes 82 Yes 83 Yes 84 Yes 85 No 86 No 87 Yes 88 No 89 Yes 90 Yes 91 No 92 No 93 No 94 Yes 95 No 96 Yes 97 Yes 98 No 99 Yes 100 No 101 No 102 No 103 104 Yes 105 Yes 106 Yes 107 Yes 108 No 109 No 110 No 111 No 112 No 113 Yes 114 No 115 Yes 116 Yes 117 Yes 118 Yes 119 No 120 No 121 No 122 No 123 No 124 No 125 No 126 No 127 Yes 128 Yes 129 Yes 130 Yes 131 No 132 Yes 133 No 134 No 135 Yes 136 No 137 No 138 Yes 139 Yes 140 Yes 141 Yes 142 Yes 143 Yes 144 No 145 Yes 146 Yes 147 Yes 148 Yes 149 Yes 150 Yes 151 Yes 152